Board of Governors of the Federal Reserve System (U.S.), 1935-. "Electric Power Use by Industries, Not Seasonally Adjusted Indexes,"
in
Board of Governors of the Federal Reserve System (U.S.), 1935-. "May 15, 1987,"
G.12.3 Industrial Production
(1987-05-15)
: 16-16.
https://fraser.stlouisfed.org/scribd/?toc_id=473802&filepath=/files/docs/releases/g12/1980s/g12_19870515.pdf&start_page=16 , accessed on February 17, 2018.